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The Ing Cup is sponsored by Ing, Yomiuri Shimbun, the Nihon-Kiin, and Kansai-Kiin, and held every 4 years (and thus often nicknamed Go Olympics). The competition has its own rules and an 8-point komi. The time allotment is 3.5 hours for each player, while players are available to buy an extra 35 minutes for an additional 2-point komi a maximum of three times. The first rounds are knockouts, while the semi-finals and finals are a best-of-3 and best-of-5 respectively.[1][2]